How to use Table output from stored MYSQL Procedure

Question

I\'ve been looking for the last hour or so and haven\'t found a conclusive answer to this seemingly simple problem:

How do you call a stored MYSQL function/p

Answer 1

Here's a concrete example in MySql 8, based on @Michael-sqlbot's suggestion:

-- Create some test data
drop table if exists someData ;
create table someData (itemId int, itemName varcharacter(20), itemQty int, itemCat int) ;
insert into someData values
(1,'First', 9, 1)
,(2,'Second',50, 3)
,(3,'Third', 12, 5)
,(4,'Fourth', 7, 3)
,(5,'Fifth', 1, 2)
,(6,'Sixth', 1, 1)
,(7,'Seventh', 9, 3)
,(8,'Eighth', 0, 2)
;

-- Just checking that it's all there!
select * from someData ;

-- Define the proc
delimiter //
drop procedure if exists prcSomeData //
create procedure prcSomeData()
    comment 'Create a temporary table called "tmpSomeData"'
begin
    drop table if exists tmpSomeData ;
    create temporary table tmpSomeData as
        select itemCat
            , sum(itemQty) as 'itemsTot'
            , min(itemQty) as 'lowestQty'
            , max(itemQty) as 'highestQty'
            from someData
            group by itemCat
            order by itemCat
        ;
end //
delimiter ;

-- Gotta run the proc to instantiate the temp table
call prcSomeData() ;        -- produces a temporary table "tmpSomeData", exists for the session
-- Now it's usable
select * from tmpSomedata ;

Which produces:

itemCat|itemsTot|lowestQty|highestQty|
-------|--------|---------|----------|
      1|      10|        1|         9|
      2|       1|        0|         1|
      3|      66|        7|        50|
      5|      12|       12|        12|